Table 7.

Osmotic stress resistance and biofilm formation.

	Isolate	NaCl 0%	NaCl 1.5%	NaCl 3%	NaCl 6.5%
Osmotic stress resistance	STAC 4	0.867 ± 0.066 c	0.737 ± 0.027 b	0.690 ± 0.028 c	0.444 ± 0.015 a
	STAC 4.1	1.113 ± 0.116 b	1.318 ± 0.240 a	0.873 ± 0.026 b	0.363 ± 0.022 b
	STAC 10	0.906 ± 0.020 c	0.824 ± 0.211 b	0.712 ± 0.042 c	0.544 ± 0.193 a
	STAC 42.1	1.369 ± 0.062 a	1.173 ± 0.084 a	1.016 ± 0.061 a	0.436 ± 0.020 a
Biofilm formation	STAC 4	0.172 ± 0.054 a	0.210 ± 0.043 a	0.224 ± 0.030 a	0.099 ± 0.091 b
	STAC 4.1	0.216 ± 0.035 b	0.180 ± 0.019 bc	0.111 ± 0.018 c	0.513 ± 0.129 a
	STAC 10	0.299 ± 0.057 a	0.201 ± 0.031 b	0.198 ± 0.057 b	0.183 ± 0.059 b
	STAC 42.1	0.238 ± 0.072 a	0.248 ± 0.044 a	0.285 ± 0.083 a	0.294 ± 0.030 a

Osmotic stress resistance and biofilm formation were evaluated after 7 days on YEL w/o (0%) and with increasing concentrations of NaCl. Osmotic stress resistance is expressed as OD₅₉₅. Biofilm formation is expressed as OD₅₄₀. Results are mean ± std of at least 5 technical replicates of three biological replicates. Different letters in the same column indicate values significantly different (p < 0.05).